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The Company Production, R+D+i, evolution. VALVULAS NACIONAL, S.A. was established in Spain in 1976.

VULAS NACIONAL, S.A., has been designing and producing safety valves according to most recognized international standards and norms: API, ASME, ASTM and the European directives 97/23 & 94/9 CE.

Our know how and capacity to adapt to the constantly changing demands of the market, made possible the introduction of new products designed for new applications in the market, like THERMOSOLAR

petrochemical, chemical and refining industries. Production capacity. VAL

In our Technical sales department we work with a modern software which allows us to verify all the possibilities, and to assure strict fulfillment of all international standards. VALVULAS NACIONAL, S.

2 The Company Production, R+D+i, evolution. VALVULAS NACIONAL, S.A. was established in Spain in The main target was to assist the petrochemical and chemical industries emerging in Spain at that time. Right from the start VALVULAS NACIONAL, S.A., has been designing and producing safety valves according to most recognized international standards and norms: API, ASME, ASTM and the European directives 97/23 & 94/9 CE. Our production process is accredited by an ISO certification. Our know how and capacity to adapt to the constantly changing demands of the market, made possible the introduction of new products designed for new applications in the market, like THERMOSOLAR PLANTS, where VALVULAS NA- CIONAL has supplied safety valves to more than 16 complete plants all over the world, while at the same time continuously supplying to all the main players in the Spanish petrochemical, chemical and refining industries. Production capacity. VALVULAS NACIONAL, S.A. valves have their discharge coefficients approved in laboratory tests, in order to guarantee and assure the correct values are being used for every sizing process. In our Technical sales department we work with a modern software which allows us to verify all the possibilities, and to assure strict fulfillment of all international standards. VALVULAS NACIONAL, S.A. has established representation agreements with the most important O.E.M. companies in the safety sector of the industry, consolidating us as one of the main companies by product range; design and consulting in new plants or in new process. Our continuous growth, shows a clear trend, which confirms the integration of our workers to provide first class service to our customers and partners. Factory & location. Our facilities are Rubí (Barcelona - Spain), with more than m2 are fully prepared for our production activities: machining with modern CNC, assembling and testing. We also have long term agreements with approved workshops, which provides us with fleibility and fast feedback to customers demands, with full quality guarantee which has always been our main target. Strategic alliances. Nowadays VALVULAS NACIONAL, S.A. starts an internationalization process, establishing representation agreements in different countries and continents all over the world, with specialized companies that will provide added value in our service towards the end user. VALVULAS NACIONAL providing safety since 1976! 2

3 Inde GENERAL FEATURES 4 CODIFICATION SYSTEM 5 PART LIST 6 BILL OF MATERIALS 7 ACCESSORIES 8 GENERAL DIMENSIONS 9 SAFETY VALVE MAIN COMPONENTS 10 TECHNICAL INFORMATION 10 OPERATING CHARACTERISTICS TABLE 10 GASES DISCHARGE FLOW 11 STEAM DISCHARGE FLOW 12 LIQUIDS DISCHARGE FLOW 13 DEFINITIONS (EN ISO ) 14 3

General features The model 5500, is an angular type safety valve at 90º between the inlet and the outlet connections, with flanged connections, semi nozzle, direct action and spring loaded.

4 General features The model 5500, is an angular type safety valve at 90º between the inlet and the outlet connections, with flanged connections, semi nozzle, direct action and spring loaded. It is designed with the same trims to work with gases and vapours or liquids. DESIGN Valve body is angular type at 90º between inlet and outlet flanges. Simplicity of construction, resulting in a valve with high reliability and easy maintenance. Self-aligning disc system with guide separated from the valve body, resulting an ecellent tightness after valve opening. Springs are designed using a tested and highly reliable calculation software and manufactured with the ideal material qualities for the process conditions, ensuring elasticity and accurate repetition of valve opening. CODES AND STANDARDS Valves have been designed and manufactured in compliance with the following directives, codes and standards: European Directive: European Directive: Design: Certifications: SIZES AND RATINGS Standard sizes and ratings: This catalogue reflects standard valves. Upon request, our technical department can design special applications. The safety valve is an automatic direct acting accessory whose function is to relieve ecessive overpressures for the applications and installations it protects. Its main characteristics, allow sudden fluid discharge with complete and fast opening (pop). Automatic valve opening is produced by of the additional lift provided by the overpressure of the fluid itself helping to overcome spring resistance. Once the installation has recovered its normal service condition, the valve closes again. INSTALLATION 97/23/CE (PED) 94/9/CE (ATEX) EN ISO /ASME VIII DIV.1 PED MODULE B+D Pressure and Temperature Limits: EN & ASME B16.34 Tests: API-527 & ASME B16.34 Quality system: EN ISO 9001:2008 Materials: ASME: Sizes: EN & ASTM/ASME ¾ 1¼ up to 6 10 Rating: 150# up to 300# EN/ISO: Sizes: Rating: DN-20DN-32 up to DN-150DN-250 PN-16 up to PN-40 Cleanliness in installation is essential for a successful valve operation. Remove all foreign materials and if possible blow away pipelines and connections on the inlet side of the valve. Mount the valve in a vertical upright position and keep inlet and discharge piping as short as possible. No stop valves may be located between the vessel protected and its pressure relief device, and the inlet piping shall have at least the passage area of the safety valve. The discharge pipe size will never be less than valve outlet, and a drain should be provided to avoid condensate accumulation. Prevent strain on valve body and outlet flange by supporting the discharge piping. NAMEPLATE EN ISO

5 Codification system 55 A B 1 1 A - 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 1 st DIGIT: Valve model 2 nd DIGIT: Inlet nominal size A: DN 20 G: DN 80 B: DN 25 H: DN 100 C: DN 32 I: DN 125 D: DN 40 J: DN 150 E: DN 50 K: DN 200 F: DN 65 L: DN rd DIGIT: Outlet nominal size (Same 2nd Digit) 4 th DIGIT: Inlet rating 1: PN 16 2: PN 25 3: PN 40 4: 150 # 5: 300 # X: OTHERS 5 th DIGIT: Outlet rating (Same 4th Digit) 6 th DIGIT: Material 7 th DIGIT: Standards accesories X0 X1 X2 X3 X4 X5 Y4 Y5 Z4 W1 W4 W5 Packed Lever Test Gag Packed lever + Test Gag Open Bonnet Open Bonnet + Test Gag Open Bonnet + Test Gag + Packed Lever Plain Lever Plain Lever + Test Gag Inconel X-750 Spring Open bonnet + Packed lever Nozzle with "Stellite" Disc with "Stellite" 5

6 Part list COVENTIONAL VALVE PLAIN LEVER PACKED LEVER

7 Bill of materials CLASS A B E U ITEM DENOMINATION -29 to 232 ºC 233 to 400 ºC -268 to 400 ºC -29 to 343 ºC 1 BODY BONNET a OPEN BONNET CAP NOZZLE (3) (3) (3) 5 DISC (4) (4) (4) 6 DISC HOLDER Annealed Annealed Annealed 7 ELASTIC RING GUIDE (8) (8) (8) 9 STEM (5) (5) (5) 10 SPRING 50CRV4 C.S. H21 T.S (1) 50CRV4 C.S. (9) 11 ADJUSTING SCREW (4) (4) Nitrided (4) 12 ADJUSTING SCREW NUT SPHERE (6) (6) (2) (6) 14 FRICTION WASHER SPRING BUTTON C.S. Zincate C.S. Zincate C.S. Zincate 17 LOCKING RING RING STUD NUT PLUG C.S. Zincate C.S. Zincate C.S. Zincate 28 PLUG GASKET Compressed Fibers Graphite Compressed Fibers (7) Compressed Fibers 29 GUIDE GASKET Compressed Fibers Graphite Compressed Fibers (7) Compressed Fibers 30 CAP GASKET Compressed Fibers Graphite Compressed Fibers (7) Compressed Fibers 43 PIN C.S. C.S. C.S. C.S. 51 LEVER CAP LEVER STEM (5) (5) (5) 53 NUT C.S. Zincate C.S. Zincate C.S. Zincate 54 NUT CAM LEVER SHAFT (3) (3) (3) 57 PACKING BRAID GRAPHITE 59 LEVER C.S. Zincate C.S. Zincate C.S. Zincate C.S. Zincate 60 NUT C.S. - DIN 934 C.S. - DIN C.S. - DIN PACKING GLAND C.S. Zincate C.S. Zincate C.S. Zincate 70 OPEN LEVER CAP OPEN CAP LEVER C.S. Zincate C.S. Zincate - C.S. Zincate 72 OPEN CAP SHAFT (5) (5) (5) (1) Inconel X-750 material for T>300ºC (2) Nitriding surface treatment (3) Quenched and Tempered HB (4) Quenched and Tempered HB (5) Quenched and Tempered HB (6) Quenched and Tempered HRC>50 (7) Graphite material for T>232ºC and T<-29ºC (8) For DN 5080: Made of CF8M S.S. casting (9) H21 T.S. material for T>232ºC 7

8 Accesories TEST-GAG PACKED LEVER PLAIN LEVER HEATING JACKET 8

A C F E General Dimensions Orifice (ø mm) 18 0.7043 (D.I.) 25 40 23 0.7043 (D.I.) 25 40 29 0.7043 (D.I.) 25 40 37 0.

7043 (D.I.) 25 40 125 0.7043 (D.I.) 25 40 (D.I.) Ductile Iron (C.S.

(Kg) DN20 DN32 2,54 95 85 294 90 339 7,3 8 DN25 DN40 4,15 100 105 344 90 389 10,4 11,1 DN32 DN50 6,61 110 115

9 A C F E General Dimensions Orifice (ø mm) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) (D.I.) Ductile Iron (C.S.) Carbon Steel (S.S.) Stainless Steel Rating Inlet Outlet Flow Area (cm 2 ) General Dimensions Standard Lever A B C E F Weight - (Kg) DN20 DN32 2, ,3 8 DN25 DN40 4, ,4 11,1 DN32 DN50 6, ,2 14 DN40 DN65 10, ,9 18,6 DN50 DN80 17, ,8 25,8 DN65 DN100 28, ,5 41,7 DN80 DN125 44, ,8 45,2 DN100 DN150 70, ,7 98,8 DN125 DN200 88, ,5 127,3 DN150 DN , ,5 159,8 B 9

10 Safety valve main componets ADJUSTING SCREW CAP NUT SPRING BUTTON BONNET STEM SPRING STUDS NUTS GUIDE BODY DISC DISC HOLDER NOZZLE Technical Information / Operating technical characteristics table SAFETY VALVE MODEL 5500 SERVICE GAS LIQUID DISCHARGE COEFFICIENT (at 10% of overpressure) BLOWDOWN (1) (2) Kd 0,90 0,67 MAX. -10% (4) -20% (5) MIN. -5% -10% SUPERIMPOSED BACK PRESSURE (3) MAX. 10% BUILT-UP BACKPRESSURE (3) MAX. 15% SET PRESSURE TOLERANCE (6) ± 3% MINIMUM SET PRESSURE ASME VIII Div.1 (bar) 1 EN ISO (bar) 0,5 (1) or 0,1 bar, whichever is greater (2) Coefficient certificated at the Laboratorio Politecnico di Milano (3) Maimum allowable backpressure without overpressure eceeds 10% (4) or 0,2 bar, whichever is greater (5) or 0,6 bar, whichever is greater (6) or ± 0,15 bar, whichever is greater 10

11 Technical information Gases discharge flow / Capacity chart - Air Values used in formulas Flow Nm³/h Temperature 15º C Overpressure 10% (*) Atmospheric Barckpressure Orificies Area cm 2 ø18 ø23 ø29 ø37 ø47 ø60 ø75 ø95 ø106 ø125 Kg/cm² 2,54 4,15 6,61 10,75 17,34 28,27 44,17 70,88 88,25 122,72 0, , , , , (*) Minimum overpressure 0,2 barg Different temperature to 15º C, multiply by K t k values different to k=1,41, multiply by K c For other fluids or working conditions use the formulas. 11

12 Technical information Steam discharge flow / Capacity chart - steam Flow Kg/h Overpressure 10% (*) Values used in formulas Orificies Area cm 2 ø18 ø23 ø29 ø37 ø47 ø60 ø75 ø95 ø106 ø125 Kg/cm² 2,54 4,15 6,61 10,75 17,34 28,27 44,17 70,88 88,25 122,72 0, , , , , (*) Minimum overpressure 0,2 barg Saturated steam values For superheated steam, multiply by k s For other fluids or working conditions use the formulas. 12

13 Technical information Liquids discharge flow / Capacity chart - liquids Flow m³/h Overpressure 10% (*) Values used in formulas Orificies Area cm 2 ø18 ø23 ø29 ø37 ø47 ø60 ø75 ø95 ø106 ø125 Kg/cm² 2,54 4,15 6,61 10,75 17,34 28,27 44,17 70,88 88,25 122,72 1 8,43 13,78 21,94 35,68 57,56 93,84 146,62 235,28 292,94 407, ,41 18,64 29,69 48,28 77,88 126,97 198,38 318,33 396,35 551, ,96 22,81 36,33 59,08 95,29 155,36 242,74 389,52 484,98 674, ,12 26,33 41,95 68,22 110,03 179,39 280,29 449,78 560,01 778, ,02 29,44 46,90 76,27 123,02 200,57 313,37 502,87 626,11 870, ,74 32,25 51,37 83,55 134,76 219,71 343,28 550,87 685,87 953, ,32 34,84 55,49 90,24 145,56 237,32 370,79 595,01 740, , ,79 37,24 59,32 96,47 155,61 253,70 396,39 636,09 791, , ,18 39,50 62,92 102,32 165,05 269,09 420,44 674,68 840, , ,48 41,64 66,32 107,86 173,98 283,65 443,18 711,17 885, , ,73 43,67 69,56 113,12 182,47 297,49 464,81 745,88 928, , ,92 45,61 72,65 118,15 190,59 310,72 485,48 779,05 969, , ,06 47,48 75,62 122,98 198,37 323,41 505,30 810, , , ,15 49,27 78,47 127,62 205,86 335,61 524,37 841, , , ,21 51,00 81,23 132,10 213,08 347,39 542,78 871, , , ,24 52,67 83,89 136,43 220,07 358,79 560,58 899, , , ,23 54,29 86,47 140,63 226,84 369,83 577,83 927, , , ,19 55,86 88,98 144,71 233,42 380,55 594,59 954, , , ,13 57,40 91,42 148,67 239,81 390,98 610,88 980, , , ,04 58,89 93,79 152,54 246,04 401,14 626, , , , ,93 60,34 96,11 156,30 252,12 411,04 642, , , , ,80 61,76 98,37 159,98 258,05 420,71 657, , , , ,65 63,15 100,58 163,58 263,85 430,17 672, , , , ,48 64,51 102,74 167,10 269,53 439,42 686, , , , ,30 65,84 104,86 170,54 275,09 448,48 700, , , , ,09 67,14 106,94 173,92 280,53 457,36 714, , , , ,88 68,42 108,98 177,23 285,88 466,08 728, , , , ,64 69,68 110,98 180,48 291,12 474,63 741, , , , ,40 70,91 112,94 183,68 296,28 483,03 754, , , , ,14 72,12 114,87 186,82 301,34 491,29 767, , , , ,87 73,31 116,77 189,91 306,32 499,41 780, , , , ,59 74,49 118,64 192,95 311,23 507,40 792, , , , ,30 75,64 120,48 195,94 316,05 515,27 805, , , , ,99 76,78 122,29 198,88 320,80 523,02 817, , , , ,68 77,90 124,08 201,79 325,49 530,65 829, , , , ,35 79,00 125,84 204,65 330,10 538,18 840, , , , ,02 80,09 127,57 207,47 334,66 545,60 852, , , , ,68 81,17 129,28 210,26 339,15 552,93 863, , , , ,33 82,23 130,97 213,01 343,58 560,16 875, , , , ,97 83,28 132,64 215,72 347,96 567,29 886, , , ,61 (*) Minimum overpressure 0,2 barg The results shown correspond to calculations for water at 20ºC For different relative densities of water to 1, multiply by Kg For other fluids or working conditions use formulas. 13

14 Definitions (EN ISO ) Blowdown: The difference between the set and re-seating pressures, normally stated as a percentage on the set pressure of a safety valve ecept for pressures of less than 3 bar when it is epressed to operate. Built-up back pressure: The pressure eisting at the outlet of the safety valve caused by flow through the valve and the discharge system Coefficient of discharge: The value of actual flowing capacity (from tests). Cold differential test pressure: The inlet static pressure at which a safety valve is set to initiate to open on the test bench. This test pressure includes corrections for service conditions, as back pressure and/or temperature. Flow area: The minimum cross-sectional flow area (but not the curtain area) between inlet and nozzle which is used to calculate the theoretical flow to discharge. Flow diameter: The diameter corresponding to the flow area. Lift: The actual travel of the valve disc starting from the closed position. Maimum allowable pressure: The maimum pressure for which the equipment is designed as specified by the manufacturer. Overpressure: A pressure increase over the set pressure, at which the safety valve achieves the lift specified by the manufacturer, usually epressed as a percentage of the set pressure. Pressure: The pressure unit used in this standard is the bar (1 bar = 105 Pa). It is quoted as gauge (relative to atmospheric pressure) or absolute as appropriate. Relieving pressure: The pressure used for the sizing of the safety valve which is greater than or equal to the set pressure plus the overpressure. Re-seating pressure: The value of the inlet static pressure at which the disc re-establishes contact with the seat or at which the lift becomes zero. Safety valve: Valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being eceeded and which is designed to re-close and prevent further flow or fluid after nominal pressure conditions of service have been restored. Set pressure: The predetermined pressure at which a safety valve under operating conditions initiates to open. Superimposed back pressure: The pressure eisting at the outlet of the safety valve at the time when the device is required to operate. 14

15 VALVE 5500 Safety valve specially designed to work with gases, vapor or liquids for industrial applications.

C/ Chopín, 2-4 - Pol. Ind Can Jardí 08191 Rubí (Barcelona) Spain Tel.

16 C/ Chopín, Pol. Ind Can Jardí Rubí (Barcelona) Spain Tel.: Fa: safety@valvulasnacional.com Member of Pekos group

Production capacity.

Production capacity. 6400 The Company Production, R+D+i, evolution. VALVULAS NACIONAL, S.A. was established in Spain in 1976. The main target was to assist the petrochemical and chemical industries emerging in Spain at that